Jisheng Zhang 509ae27a18 arm64: kprobes: Restore local irqflag if kprobes is cancelled ... [ Upstream commit 738fa58ee1328481d1d7889e7c430b3401c571b9 ] If instruction being single stepped caused a page fault, the kprobes is cancelled to let the page fault handler continue as a normal page fault. But the local irqflags are disabled so cpu will restore pstate with DAIF masked. After pagefault is serviced, the kprobes is triggerred again, we overwrite the saved_irqflag by calling kprobes_save_local_irqflag(). NOTE, DAIF is masked in this new saved irqflag. After kprobes is serviced, the cpu pstate is retored with DAIF masked. This patch is inspired by one patch for riscv from Liao Chang. Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Link: https://lore.kernel.org/r/20210412174101.6bfb0594@xhacker.debian Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-04-28 13:40:02 +02:00
..
boot	arm64: dts: allwinner: Revert SD card CD GPIO for Pine64-LTS	2021-04-28 13:40:00 +02:00
configs	arm64: defconfig: Build in CONFIG_GPIO_MXC by default	2020-10-26 15:48:58 +08:00
crypto	crypto: arm64/sha - add missing module aliases	2021-03-04 11:38:31 +01:00
include	arm64: alternatives: Move length validation in alternative_{insn, endif}	2021-04-21 13:00:55 +02:00
kernel	arm64: kprobes: Restore local irqflag if kprobes is cancelled	2021-04-28 13:40:02 +02:00
kvm	KVM: arm64: Disable guest access to trace filter controls	2021-04-16 11:43:19 +02:00
lib	arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S	2020-10-30 08:32:31 +00:00
mm	arm64: mm: correct the inside linear map range during hotplug check	2021-04-07 15:00:03 +02:00
net
xen
Kbuild
Kconfig	arm64: mte: Ensure TIF_MTE_ASYNC_FAULT is set atomically	2021-04-21 13:01:00 +02:00
Kconfig.debug
Kconfig.platforms	arm64: berlin: Select DW_APB_TIMER_OF	2020-10-26 10:45:03 +01:00
Makefile	arm64: link with -z norelro for LLD or aarch64-elf	2021-01-12 20:18:24 +01:00